Oliver Neukum wrote: > Am Samstag 03 Mai 2008 14:36:48 schrieb Alan Jenkins: > >> I don't think that should count as an "active" device. That's about as >> much as I can help. I suggest you ask the linux-usb-users mailing list >> - someone referred me there when I was asking about this sort of thing, >> and they were pretty responsive and helpful. >> > > Any USB device that is not explicitely suspended is active. With the > exception of hubs USB devices are not suspended unless their driver > and user space via sysfs request it. > But in this case there is no driver. With linux, you have to have a driver, e.g. for charging a Blackbery via USB; if it has no driver at all then it wouldn't be powered - no? Surely if a device without drivers isn't considered to require power, then it shouldn't be considered to be active? Or is this an illogical quirk of the UHCI hardware?
Are you suggesting that Sascha and others need to identify all the devices without drivers hanging off their USB bus and de-"activate" them in sysfs, i.e. echo "suspend" > power/level Eww! Are you sure it's that bad? If devices without drivers can't expect power, then they can't do anything useful at all and they should be de-"activated" automatically :-(. Thanks Alan _______________________________________________ Discuss mailing list [email protected] http://mail.lesswatts.org/mailman/listinfo/discuss
